anything runs a risk with a boost controller that doesn't supply proper duty cycles and fuel pressure. you can always play it safe and run rich as balls, but you will kill your performace and bust carbon for the rest of your life. apr and revo does some wonders from what i know. not sure, though. i don't know jack about the 20vt. i'm a 16v junkie that pushed cis-e to the wall and i'm using a homemade hondata ecu. run it rich and forget it.